Twister-head for wire-splicing machines.



T. DAVITT. TWISTER HEAD FOR WIRE SPLICING MACHINES.

APPLICATION FILED FEB. 16. 1915.

1, 174, 128; Patented Mar. 7, 1916.

2 SHEETS-SHEET 1.

' Fig.1.

THE COLUMBIA PLANOGRAPH .60.. WASHINGTDN, D. c.

T. DAVITT.

TWISTER HEAD FOR WIRE SPLICING MACHINES.

Patented Mar. 7, 1916.

2 SHEETSSHEET 2 APPLICATION FILED FEB. 16, I915.

aliens,

'THOMAS DAVITT, or ADRIAN, MICHIGAN,

TWISTER-HEAD FOR WIRE-SPLICING MACHINES.

To all whom it may concern:

I Be it known that I, 'THoMAs DAVITT, a citizen of the United States ofAmerica, residing at Adrian, in the county of Lenawee and State ofMichigan, have invented new and useful Improvements in Twister- Headsfor Wire-Splicing Machines, of which the following is a specification.

This invention relates to improvements in twister headsfor wire splicingmachines and'has particular application to a twister head for use inconjunction with machines of that type disclosed in my prior Patent No,1,092,028, issued March 81, 191 1.

In carrying out the present invention, it

is my purpose to provide a twister head for wire twistingmachineswhereby one end of one wire may be wrapped about the adjoiningend of the other wire to effect a splice and whereby the meeting ends ofthe wires may be intertwisted or spliced quickly and uniformly.

It is also my purpose to improve and simplify the general constructionof twister heads for machines of the classdescribed and to provide ahead which may be readily applied to the mandrel or spindle of themachine and removed therefrom and into n and out of which thewires to bespliced may be quickly and conveniently inserted and Withdrawn.

With the above and other'objects in view, the invention consists in theconstruction,

combination and arrangement of parts hereinafter set forth in andfalling within the scope of the claims.

In the accompanying drawings, Figure 1 is atop plan view of a pair oftwister heads constructed in accordance with the present invention, thewires being placed therein. Fig. 2 is a longitudinal sectional Viewtherethrough. 1 Fig. 3 is a cross-sectional view through one of theheads. Fig. 4 is "a collective View showing the component parts of thehead in perspective.

Referring now to the drawings indetail, 1, 1 designate the mandrels orshafts of a wire twisting machine. These mandrels aline axially witheach other and are capable of rotary and sliding movement simultaneouslyin relatively opposite direc- Specification of Letters Patent.

Application filed February 16, 1915. Serial No. 8,570.

, Patented Ma .7,191e.

tions. Any suitablemeans may be employed for thus rotatlng and slidingthe mandrels.

The respective mandrels are also formed withlongitudinal grooves 2 sothat the driving gears may be splined or feathered thereon and thesegrooves radiate from the axes of the shafts and open onto the con-'fronting ends thereof,while the confronting ends of the mandrelsarecircumferen tially reduced as at 3. Mounted upon the circumferentiallyreduced end portion of each mandrel l is a twister head 4: comprising asleeve 5 encircling the circumferen-' tially reduced end portion of themandrel and formed with a threaded opening designed to receive aset-screw 6 whereby the sleeve may be fastened upon the mandrel. Formedin the sleeve 5 is a radial slot 7 of a length equalto that of thesleeve and registering with the groove in the shaft and forming, ineffect, a continuation of such groove. The outer end ofthe sleeve 5prolects beyond the mandrel coaxial with the latter and formed in thesleeve adjacent to the outer end thereof concentrically of the axis ofthe sleeve is a segmental slot 8 having one end opening into the radialslot 7. This segmental slot 8 is-arranged at'right angles to "the radialslot 7, as clearly illus-- trated in Fig. 1 of the drawings. The hole ofthe sleeve 5 is circumferentially enlarged at the projecting end portionthereof and mounted within 1 the circumferentially enlarged' portion ofthe bore of the sleeve 5 is a locking sleeve 9 disposed concentrically-of the sleeve '5 and having theouter end portion projecting beyond theadjacent ex tremity ofthe first-mentioned sleeve. Formed in the lockingsleeve is a longitudinally extending radial slot 10 normally registeringwith the slot in the sleeve 5 and the groove in the mandrel and formedin the locking sleeve adjacent to the outer end thereof is a segmentalslot 11 arranged at right angles to the radial slot 10 and'having' oneend thereof opening into theslot 10,

the slot 11 being arranged concentrically of the axis of the lockingsleeve. Secured to the locking sleeve 9 and disposed within thesegmental slot 8 in the sleeve5' is an operating pin 12 capable ofworking within direction to rotate the locking sleeve to move the radialslot 10 therein out of registration with the similar slot in the sleeve5 and when moved in the opposite direction to aline the radial slot inthe locking sleeve with the slot in the outer sleeve.

13' designates a cap plate formed centrally with an opening 1 1 andprovided with a radial slot 15 extending from the opening 14: to theperiphery of the cap plate. The

cap plate is placed in face to face contact with the outer end of theouter sleeve 5 and secured thereto by means of securing screws 16 passedthrough openings in the cap plate and threaded into openings in theouter end of the outer sleeve. The inner surface of the cap plate isformed with a relatively large circular recess 17 that receives theprojecting end portion of the locking sleeve 9 and formed in one wall ofthe radial slot, 15 in the sleeve is a groove 18 designed to aline withthe-endwall ofthe segmental slot 11 in the locking sleeve 9 when thelatter is actuated by the'operatirig pin 12 to move the radialvslot 10out of registration with the similar slot. 7 in the outer sleeve.

- In practice, the twister heads 4: composed of the outer sleeves 5 theinner sleeves 9 and the cap plates 18 are secured to the confrontingends of the respective inandrels or shafts l and opposite y arra g d Nrmally, the radial slots in the locking sleeves register with thesimilar ots 7 in the ut slee es'and he slots .5 i the cap p ates.

The overlapping ends. of the wires to be spliced or intertwisted are newplaced in the alini-ng slots and grooves in the twister heads and mandres and the o er yi g e ds secured t geth in e m dia e theirl ngth byasuitable clamping device, such, for instance, as shown in Fig. l of myprior pat.- ent herei efere referred to; The en p tions of the wiresare'bent atright angles to themselves as illustrated in Figs. 1 and 2and the right angularly extending portions lie in'the plane of thesegmental grooves in the locking sleeves and are disposed within thegrooves 18in the walls of the respective radial slots in the ,capplates. The operating pins 12 are now swung within the respectivesegmental slots 8 in the outer sleeves 5, thereby revolving the lockingsleeves 9 within the respective outer sleeves and cap plates to closethe entranceslotsto the twister headsand in this movement of the locloing' sleeves the segmental slots 11 therein receive the angularlyextending portions of the wires. The mandrels carrying the heads are nowrotated and in the rotation thereof slide longitudinally as described inmy previouspatent thereby intertwisting the wires From the foregoingdesc iption taken in spi it of the inventio connection with theaccompanying drawings, the construction, mode of operation and manner ofemploying my improved twister head will be readily apparent.

It will be seen that I have provided a twister head for wire splicingmachines whereby the ends of the wires to he spliced will be securelyheld within the twister heads that I do not limiter confine myself tothe precise details of construction herein de-. scribed and delineated,as modification and variation may be made within the scope of the claimswithout departing from the I laim: a

1. Atwister head for wire splicing rnachines comprising a sleeve havinga radial slot formed he ein e te ding fr m the e e o the o ter s rfacethereof and a egmen al sl t f rmed the n eone ntri ally of th axisthereof and at righ angles to t e first-mentioned Slot and opening intothe latter, a locking sleeve rotatably mounted ithin id fi l e and fomed wit a radial slot normally registering with the simi r slot in hefirst-mentioned s eve and having a central slot therein arranged atright angles to the radial slot and disposed in a plane beyond that ofthe segmental slot in the first-mentioned sleeve, and means connected tosaid locking sleeve and projecting through the segmental slot in thefirst-mentioned sleeve whereby the locking sleeve may be rotated withinthe first sleeve, 2. A twister head for wire splicing ma; chinescomprising a sleeve having agradial 1 1; formed her in ex end g m the heto the outer surface thereof and a segmenm1 slot f m ther i enc ntric yof the axis thereof and at right angles to the first? mentioned slot andopening into the latter, a locking sleeve rotatably mounted within saidfirst sleeve and formed with a radial slot normally registering with thesimilar slot in the first-mentioned sleeve and having a central slottherein arranged at, right angles to the radial slot and disposed in a pa b y nd tha of t e s me t ot in the first-mentioned sleeve, meansconnected to said locking sleeve and projecting through the segmentalslot in the first-mentioned sleeve whereby the [locking sleeve mayberotated within the first sleeve, a cap P e pl n f ce to face c act wit te outer end of the first-mentioned sleeve and eeme there and havi g t einner face thereof formed with a circular recess to re- In testimonywhereof I'aflix my. signature ceive the adjacent end of saidlockingsleeve, in presence of two witnesses. said cap plate being formedcentrally with an Opening and having a radial slot formed v THOMASDAVITT" 5 therein leading from the opening onto the Witnesses:

periphery thereof and registering with the v R. A. KAISER,

' first-mentioned slots. ALANSON BENNETT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

